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Preparation of novel and highly active magnetic ternary structures (metal-organic framework/cobalt ferrite/graphene oxide) for effective visible-light-driven photocatalytic and photo-fenton-like degradation of organic contaminants

Bagherzadeh, B ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jcis.2021.05.181
  3. Publisher: Academic Press Inc , 2021
  4. Abstract:
  5. Herein, MIL-101(Fe), CoFe2O4, novel binary (MIL-101(Fe)/CoFe2O4, MIL-101(Fe)/GO and CoFe2O4/GO), and ternary (MIL-101(Fe)/CoFe2O4/(3%)GO and MIL-101(Fe)/CoFe2O4/(7%)GO) magnetic composites based upon the MIL-101(Fe) were synthesized. The XRD, FESEM, TEM, EDX, BET-BJH, FTIR, VSM, DRS, PL, EIS and other electrochemical analyses were applied to characterize samples. The MIL/CoFe2O4/(3%)GO demonstrated the best performance compared to other samples for visible light photocatalytic and photo-Fenton-like degradation of Direct Red 23 (DtR-23), Reactive Red 198 (ReR-198) dyes as well as Tetracycline Hydrochloride (TC-H) antibiotic. Degradation of dyes using the ternary composite after 70 min of visible light irradiation was greater than that of 99%. The presence of the optimum GO as a strong electron acceptor in MIL/CoFe2O4/(3%)GO not only led to the effective separation of charge carriers and thus reduction of their recombination but also increased the absorption of visible light. The composite possessed good durability in terms of stability and reusability. The PL, EIS and electrochemical analyses indicated that the MIL/CoFe2O4/(3%)GO improved the optical properties and photocatalytic performance. © 2021 Elsevier Inc
  6. Keywords:
  7. Carrier mobility ; Electrochemistry ; Metal-organic frameworks ; Optical properties ; Organometallics ; Photodegradation ; Reusability ; Degradation of organic contaminants ; Electrochemical analysis ; Magnetic composites ; Photocatalytic performance ; Ternary composites ; Tetracycline hydrochloride ; Visible-light irradiation ; Visible-light-driven ; Photocatalytic activity ; Cobalt derivative ; Cobalt ferrite ; Congo red ; Direct red 23 ; Dye ; Graphene oxide ; Graphite ; Hydrogen peroxide ; Magnetic nanoparticle ; Metal organic framework ; Organic compound ; Reactive red 198 ; Tetracycline ; Unclassified drug ; Cobalt ; Cobalt ferrite ; Ferric ion ; Graphene oxide ; Adsorption ; Concentration (parameter) ; Contamination ; Controlled study ; Crystal ; Desorption ; Diffuse reflectance spectroscopy ; Electrochemical analysis ; Electron ; Electrospray mass spectrometry ; Energy dispersive X ray spectroscopy ; Fenton reaction ; Field emission scanning electron microscopy ; Fourier transform infrared spectroscopy ; Impedance spectroscopy ; Irradiation ; Isotherm ; Light absorption ; Magnetic field ; Morphological trait ; pH ; Photocatalysis ; Photodegradation ; Photoluminescence ; Photosensitization ; Pollutant ; Pore size distribution ; Pore volume ; Porosity ; Reduction (chemistry) ; Separation technique ; Surface area ; Surface property ; Synthesis ; Transmission electron microscopy ; Ultraviolet visible spectroscopy ; Vibrating sample magnetometry ; Water contamination ; X ray diffraction ; Catalysis ; Cobalt ; Ferric compounds ; Graphite ; Light ; Metal-organic frameworks
  8. Source: Journal of Colloid and Interface Science ; Volume 602 , 2021 , Pages 73-94 ; 00219797 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0021979721008699